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Originally posted by mactheaxe
reply to post by InhaleExhale
yea, got mixed up sorry.
Originally posted by ownbestenemy
reply to post by Chadwickus
Those are cemtrails! Stop denying it! Parts of Australia are hot; therefore the air, at 30+ thousand feet should be the same!
When a jet engine is spewing out hot, humid air into an atmosphere that is cold and has low vapor pressure, the result is condensation. The water vapor coming out of the engine quickly condenses into water droplets and then crystallizes into ice. The ice crystals are the clouds that form behind the engine. This is why the streaks are called contrails, short for "condensation trails." To help explain it, scientists liken it to seeing your breath on cold days. You may have noticed that puffs of breath dissipate quickly on dryer days. The same is true of contrails: When the atmosphere is more humid, the contrails linger, but when the atmosphere is dry, the contrails disappear more quickly.